Sou Hu Cai Jing·2025-05-30 01:21Group 1 - The State Intellectual Property Office of China shows that China Petroleum & Chemical Corporation and China Petrochemical Group Chongqing Chemical & Chemical Co., Ltd. have applied for a patent titled "Ethylene-Vinyl Acetate Copolymer Solution and Its Preparation Method and Application" with publication number CN120059023A, filed on November 2023 [1] - The patent involves the field of resins, detailing a method for preparing ethylene-vinyl acetate copolymer solution, which includes polymerizing vinyl acetate with ethylene in the presence of a first solvent and initiator, followed by mixing the product with a second solvent and a terminator [1] Group 2 - China Petroleum & Chemical Corporation, established in 2000 and located in Beijing, primarily engages in the petroleum, coal, and other fuel processing industries, with a registered capital of approximately 12.17 billion RMB [1] - The company has invested in 255 enterprises, participated in 5,000 bidding projects, holds 45 trademark records, 5,000 patent records, and possesses 39 administrative licenses [1] Group 3 - China Petrochemical Group Chongqing Chemical & Chemical Co., Ltd., founded in 1980 and based in Chongqing, focuses on the manufacturing of chemical raw materials and products, with a registered capital of approximately 731.13 million RMB [2] - The company has invested in 15 enterprises, participated in 4,917 bidding projects, holds 14 trademark records, 653 patent records, and possesses 703 administrative licenses [2]